One more tip is, I have found that when tying flies on # 12
and larger hooks, Nymphs, Streamers and especially when spinning elk and deer hair, that I use "Wooly-Nylon" thread, it is strong and tough and works like a champ. It comes in various colors found in some fabric stores, and you get like a 1200 yd spool for a little over $5.00, where I shop.